Time Dependent Chloride Diffusion Coefficient in Concrete in Cold Regions

DOI

10.2991/mebe-15.2015.151How to use a DOI?

Keywords

Chloride ingress model; diffusion; freeze-thaw cycles; time dependent diffusion coefficient.

Abstract

Chloride and freeze-thaw cycles are two main factors which cause deterioration of reinforced concrete (RC) structure in the cold regions. In this paper, the process of chloride ingress into concrete exposed to freeze-thaw cycles is experimentally researched. From the experimental results, it appears that freeze-thaw cycles make the effective diffusion coefficient become bigger. Based on the experimental data, the concept of developing coefficient was defined to obtain the evolution equation of effective diffusion coefficient. Together with considering the effect of aging of concrete on effective diffusion coefficient, the time dependent diffusion coefficient of concrete in cold regions was obtained.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Download article (PDF)

TY  - CONF
AU  - Sijia Chen
AU  - Xiaobing Song
AU  - Xila Liu
PY  - 2015/04
DA  - 2015/04
TI  - Time Dependent Chloride Diffusion Coefficient in Concrete in Cold Regions
BT  - Proceedings of the 2015 International Conference on Materials, Environmental and Biological Engineering
PB  - Atlantis Press
SP  - 654
EP  - 659
SN  - 2352-5401
UR  - https://doi.org/10.2991/mebe-15.2015.151
DO  - 10.2991/mebe-15.2015.151
ID  - Chen2015/04
ER  -